Yes, We Have No Bananas

Bananas are in a bunch of trouble

Panama disease – or Fusarium wilt of banana – is back, and the Cavendish does not appear to be safe from this new strain, which appeared two decades ago in Malaysia, spread slowly at first, but is now moving at a geometrically quicker pace. There is no cure, and nearly every banana scientist says that though Panama disease has yet to hit the banana crops of Latin America, which feed our hemisphere, the question is not if this will happen, but when. Even worse, the malady has the potential to spread to dozens of other banana varieties, including African bananas, the primary source of nutrition for millions of people.

Banana scientist? Can you get an actual degree in “banana science?”

Conference by Proxy

Chad’s got his complete summary of the DAMOP meeting up at Uncertain Principles. Day 1, Day 2, Day 3 and the wrap-up.

I would have liked to have gone but my plans were thwarted. Next year the conference is in nearby Charlottesville, VA, so I’ll definitely try and make that one. I don’t think there will be another conference competing for my time and attention.

Revenge of Toys in the Office

This was originally purchased to extend my effective tickling and grabbing range when my nieces were younger. (Before they underwent the phase transition to where tickling just isn’t tolerated much) Now it’s used to grab errant trash-can-tosses if I’m being lazy, and retrieve objects that fall in the gap between the desk and the wall.

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Testing Your Ingenuity

There’s the Batman problem, and “an Elephant is in the way” problem.

I have a contribution that I’ve recreated below. Back when I was teaching for the Navy, there were many opportunities to learn “new” physics and see interesting answers (one shipmate kept a list of the various spellings of “Bremsstrahlung” found on exams; he had over 35 by the time he left), and the occasional tactic, as shown in the above links, of a student realizing he can’t answer the exam question, so some other reply is needed. Sometimes you change the question (hoping for a Kobayshi Maru-esque commendation for original thinking), and sometimes you just write something down, hoping it’s correct and praying for the gods of partial credit to save you.

There was this one student who wins the gold star for this. He had been a decent student through the first several months of nuclear power school, but then something happened and he started to flame out, spectacularly. A student could be dropped from the training only after failing two courses, among other requirements, so the fact that he had completed several classes and passed exams in the current courses meant that the trajectory was visible for a relatively long time. Passing was set at 62.5%, and he failed a couple of exams (including what I was teaching) with scores of less than 50%. Most students who failed out would at least keep up the appearance of trying, lest he be found guilty of dereliction of duty, but it was clear that tis particular student just stopped caring. On an electrical systems exam, he answered only one question: “Draw a one-line diagram of the XXXX system” (a one-line diagram is a schematic) This is what his answer looked like

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He was given full points for the problem, and then booted out.

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Added 6/3: It’s not just physics. Check out this bio question